kernel/arch/arc/include/asm/dwarf.h, branch linux-5.1.yHosts the 0x221E linux distro kernel.https://universe.0xinfinity.dev/distro/kernel/atom?h=linux-5.1.y2016-09-30T21:48:22ZARC: dw2 unwind: add infrastructure for adding cfi pseudo ops to asm2016-09-30T21:48:22ZVineet Guptavgupta@synopsys.com2016-09-17T00:23:26Zurn:sha1:5a205a32ffccf6e720a2d2b3aee44b16619016a6
1. detect whether binutils supports the cfi pseudo ops
2. define conditional macros to generate the ops
3. define new ENTRY_CFI/END_CFI to annotate hand asm code.
- Needed because we don't want to emit dwarf info in general ENTRY/END
used by lowest level trap/exception/interrutp handlers as unwinder
gets confused trying to unwind out of them. We want unwinder to
instead stop when it hits onfo those routines
- These provide minimal start/end cfi ops assuming routine doesn't
touch stack memory/regs
Signed-off-by: Vineet Gupta <vgupta@synopsys.com>